How should I add my rental income for Limited company?

Let me provide information on how to add rental income for a limited company in QuickBooks, @lpmguk-gmail-com.

We may create sales transactions in your QuickBooks Online account to record rental income. You can choose either an invoice, sales receipt, or deposit.

If you wish to enter an invoice, here's what you need to do:

1. Select + New and choose Invoice.
2. From the Customer ▼ dropdown, select a customer. 
3. Review the Invoice date. Then from the Terms ▼ dropdown, select the due date. 
4. From the Product/Service column, select a product or service. 
5. Enter a Quantity, Rate and Amount if needed.
6. Once done, click Save and close.

For more information, please see this article: Create and send invoices in QuickBooks Online.

Additionally, I've attached relevant articles you can utilize to help manage sales transactions in QuickBooks Online:

• Customise invoices, estimates, and sales receipts in QuickBooks Online
• Record invoice payments in QuickBooks Online

Feel free to get back in here if you have further concerns with adding rental income in QuickBooks. I'm always around to help. Keep safe!